Tokyo experienced a record 35 consecutive days of rain from the end of August through September 28, 2026. The heaviest daily rainfall—156 millimeters (6 inches)—fell on September 21. The entire streak brought a cumulative total of 629 mm (25 inches), which is three times the normal amount for this season. Some days saw minimal rainfall, while typhoons Krovanh and Dujuan dumped substantial amounts, including the peak on September 21.
Click on the play button in the lower left corner to view an animation of the bands of rain passing over central Japan between August 27 and September 28, 2026. The Integrated Multi-satellitE Retrievals for Global Precipitation Measurement (GPM) (IMERG) shows the rate of rain in millimeters per hour (mm/hr), and is overlaid on a true-color corrected reflectance image from the Visible Infrared Imaging Radiometer Suite (VIIRS) instrument aboard the NOAA-20 platform.
The previous record for consecutive days of precipitation in Central Japan was set in June and July 2019, when rain fell on Tokyo for 33 days in a row.
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